Exhaust› Exhaust Pipes, Systems and Components

Flowmaster

American Thunder Crossmember-Back Exhaust System Fits 1964-1967 GM A-Body With V8 Engine, 2.5 Inch Stainless Steel Pipes Aggressive To Moderate Sound Flowmaster

$1,229.39

SKU: F00L 817412

In Stock
In Stock
Ships by Jun 7
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

A complete Header-back dual exhaust system featuring mandrel-bent stainless steel tubing for maximum performance. It includes two Super 40 Series mufflers, delivering an aggressive interior and exterior tone. Designed for improved throttle response, power, and mileage, the system includes all necessary parts and hardware for easy installation.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandFlowmaster
Part NumberF00L 817412

Videos

1964-1967 GM Chevelle, GTO, Cutlass Skylark - American Thunder Exhaust System 817412

1964-1967 GM Chevelle, GTO, Cutlass Skylark - American Thunder Exhaust System 817412
Flowmaster 1964-72 GM A-Body Dual Exhaust Install

Flowmaster 1964-72 GM A-Body Dual Exhaust Install
Install Flowmaster American Thunder Exhaust on a 1966 Chevy Chevelle (64-67 Body)

Install Flowmaster American Thunder Exhaust on a 1966 Chevy Chevelle (64-67 Body)
1964-1967 GM A-Body - American Thunder Dual Exhaust System 817412

1964-1967 GM A-Body - American Thunder Dual Exhaust System 817412
1967 Chevelle - Flowmaster Exhaust

1967 Chevelle - Flowmaster Exhaust
1966 Chevelle Exhaust Upgrade

1966 Chevelle Exhaust Upgrade
Project Chevelle Episode 12: Exhaust

Project Chevelle Episode 12: Exhaust

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

View Full Return Policy